Intestinal stent
By designing an intestinal stent for the radical laparoscopic low-level rectal cancer surgery, the transfer of intestinal contents is achieved using the transflux catheter and airbag, the problem of anastomosis leakage after the operation is solved, the need for secondary surgery is reduced, and the quality of life and medical efficiency of patients are improved.
Patent Information
- Application Number
- CN202421907608.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-07
AI Technical Summary
After laparoscopic low-level rectal cancer radical surgery, anastomotic leakage and anastomotic fistula are serious complications. The existing protective stoma method requires patients to carry the stoma for a long time, which brings inconvenience in life and increases medical costs.
An intestinal stent was designed, including a transfer catheter, an inflatable connection tube, a drug injection connection tube and an airbag. By placing the transfer catheter at the end of the ileum and using the airbag to inflate the intestinal duct, the transfer of intestinal contents is achieved and the stimulation of the anastomosis is reduced.
It effectively reduces the occurrence of anastomotic leakage, avoids secondary retraction surgery, improves the quality of life of patients, and reduces medical costs.
Smart Images
Figure CN222997953U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an intestinal stent. Background Art
[0002] During the radical resection of low rectal cancer by laparoscopy, the stent method for intestinal diversion is applied to prevent anastomotic leakage. Anastomotic fistula is a serious complication after rectal cancer surgery. Surgeons often adopt protective stoma and other methods to prevent anastomotic leakage after surgery. Conventional protective stoma methods, such as ileostomy at the terminal ileum, transverse colostomy, etc., require patients to live with the stoma for 3 to 6 months. The stoma and its complications bring inconvenience to the patients' lives, and the secondary reinsertion surgery also increases the medical cost and psychological pressure. Content of the Utility Model
[0003] To solve the problems mentioned in the background art, the purpose of the utility model is to provide an intestinal stent.
[0004] To achieve the above goal, the technical solution of the utility model is as follows:
[0005] The intestinal stent includes a diversion catheter, an inflation connecting tube, a medicine injection connecting tube, and an airbag. An airbag is sleeved on the outer wall of the diversion catheter near its first end. The inflation connecting tube penetrates through the side wall of the diversion catheter and part of it is placed inside the diversion catheter. One end of the inflation connecting tube inside the diversion catheter is connected to the airbag. The first end of the medicine injection connecting tube is connected to the side wall of the diversion catheter. The part where the inflation connecting tube penetrates through the diversion catheter and the connection point of the medicine injection connecting tube and the diversion catheter are both set away from the airbag.
[0006] Further, a medicine injection port is connected to the second end of the medicine injection connecting tube.
[0007] Further, the medicine injection port is a positive pressure connector for medical injection.
[0008] Further, a plurality of side holes are provided on the side wall of the diversion catheter between the airbag and the first end of the diversion catheter.
[0009] Further, the diversion catheter is 40 cm long, the width of the airbag reaches 3 cm when inflated to the maximum, the exposed length of the inflation connecting tube is 8 cm, and the length of the medicine injection connecting tube is 8 cm.
[0010] The beneficial effects of the present utility model are as follows: When in use, the bypass catheter is placed at 20 cm from the end of the ileum, and purse-string suture is performed to prevent the outflow of intestinal contents. The tip of the bypass catheter is placed distally along the intestinal tract until the end of the ileum. An air syringe can be connected to the inflation connecting tube to inflate the airbag. After the airbag bulges and holds up the intestinal tract for fixation, after observing that the blood supply of the intestinal mucosa is normal, the syringe is removed and the airbag is fixed. Normal saline or contrast agent can be injected through the medicine injection port to observe whether the tip of the bypass catheter is unobstructed. After confirmation, the bypass catheter can be led out through a stab hole in the abdominal wall and fixed to the abdominal skin with silk thread. The distal end of the catheter can be externally connected to a drainage bag to observe the outflow of intestinal contents. The diversion of intestinal contents can reduce the stimulation of the anastomotic stoma by intestinal contents, reduce the occurrence of anastomotic leakage and secondary surgery. For medium- and high-risk patients who may require prophylactic stoma, using this bypass device that can both achieve intestinal bypass and avoid secondary re-resection surgery can bring considerable benefits to patients. Using the bypass tube to divert the proximal intestinal contents to the outside of the body can avoid the contamination and impact of intestinal contents on the anastomotic stoma, and can create favorable conditions for the healing of the anastomotic stoma. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic structural diagram of the present utility model.
[0012] Description of the drawing reference numerals: 1. Bypass catheter, 11. Side hole, 2. Inflation connecting tube, 3. Medicine injection connecting tube, 31. Medicine injection port. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the present utility model.
[0014] As Figure 1 shown, the intestinal stent includes a bypass catheter 1, an inflation connecting tube 2, a medicine injection connecting tube 3 and an airbag 4. The bypass catheter 1, the inflation connecting tube 2, the medicine injection connecting tube 3 and the airbag 4 are all made of silica gel. The bypass catheter 1 is 40 cm long and has an inner diameter of 1.5 cm. An airbag 4 is sleeved at a position 4 cm from the first end of the outer wall of the bypass catheter 1. The length of the airbag 4 is 4 cm. The inflation connecting tube 2 penetrates through the bypass catheter 1 from the middle position of the side wall of the bypass catheter 1 and is partially placed inside the bypass catheter 1. One end of the inflation connecting tube 2 inside the bypass catheter 1 is connected to the airbag 4. The first end of the medicine injection connecting tube 3 is connected to the middle part of the side wall of the bypass catheter 1. The second end of the medicine injection connecting tube 3 is connected with a medicine injection port 31. When the inflation volume of the airbag 4 is the largest, the width reaches 3 cm. The exposed length of the inflation connecting tube 2 outside is 8 cm. The length of the medicine injection connecting tube 3 is 8 cm.
[0015] In practical applications, the bypass catheter 1 is placed at 20 cm from the terminal ileum, and purse-string suture is performed to prevent the outflow of intestinal contents. The tip of the bypass catheter 1 is placed distally along the intestinal tract until the terminal ileum. A 50-ml syringe can be connected to the inflation connecting tube 2 to inflate the airbag 4. After the airbag 4 bulges and props up and fixes the intestinal tract, after observing that the blood supply of the intestinal mucosa is normal, the syringe is removed, the airbag 4 is fixed, and normal saline or contrast agent can be injected through the medicine injection port 31 to observe whether the tip of the catheter is unobstructed. After confirmation, the bypass catheter 1 can be led out through a stab hole in the abdominal wall and fixed to the abdominal wall skin with 2-0 silk thread. The distal end of the bypass catheter 1 can be externally connected to a drainage bag to observe the outflow of intestinal contents.
[0016] In this embodiment, the medicine injection port 31 is a medical injection positive pressure connector, which is convenient to obtain materials and is reasonably designed to avoid drug reflux.
[0017] In this embodiment, a plurality of side holes 11 are provided on the side wall of the bypass catheter 1 between the airbag 4 and the first end of the bypass catheter 1, which is convenient for intestinal contents to flow into the bypass catheter 1.
[0018] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. All any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. An intestinal stent, characterized in that: The invention comprises a shunt catheter (1), an inflation connecting tube (2), an injection connecting tube (3) and an air bag (4); the air bag (4) is sleeved on the outer wall of the shunt catheter (1) near its first end; the inflation connecting tube (2) penetrates the side wall of the shunt catheter (1) and is partially inserted into the shunt catheter (1); one end of the inflation connecting tube (2) in the shunt catheter (1) is connected to the air bag (4); the first end of the injection connecting tube (3) is connected to the side wall of the shunt catheter (1); the part where the inflation connecting tube (2) penetrates the shunt catheter (1) and the connection point between the injection connecting tube (3) and the shunt catheter (1) are both arranged away from the air bag (4).
2. The intestinal stent according to claim 1, characterized in that: The second end of the drug injection connecting pipe (3) is connected to a drug injection port (31).
3. The intestinal stent according to claim 2, characterized in that: The drug injection port (31) is a positive pressure connector for medical injection.
4. The intestinal stent according to claim 1, characterized in that: A plurality of side holes (11) are arranged on the side wall of the shunt catheter (1) between the air bag (4) and the first end of the shunt catheter (1).
5. The intestinal stent according to claim 1, characterized in that: The diversion catheter (1) is 40 cm long, the width of the airbag (4) is 3 cm when the air volume is maximized, the external leakage length of the inflation connecting tube (2) is 8 cm, and the length of the drug injection connecting tube (3) is 8 cm.